Adjustable nose bridge support for bifocal spectacles



Aug. M1), 1948. J. H. SEGUIN 2,446,725

ADJUSTABLE NOSE BRIDGE SUPPORT FOR BIFOCAL SPECTACLES Filed Dec. 5, 1945D an/Zr.-

y f'azz Hzya'fyz/lk Patented Aug. 10, 1948 ADJUSTABLE NOSE BRIDGESUPPORT FOR BIFOOAL SPEOTACLES Jean Bushes Seguin, St. Eustache,

Canada Quebec Application December 3, 1845, Serial No. 832,398

2 Claims. (01. 88-51) The present invention pertains to a novel supportfor spectacles, particularly of the biiocal type. It is well known amongwearers of bifocal spectacles that considerable difllculty isexperienced in shifting the line of sight from the distance portion ofthe lens to the reading portion and vice versa. For example, the wearermust tilt his head to an uncomfortable angle in order to sight throughthe reading or inserted lens portions.

The principal object of this invention is to overcome these dlfflcultiesand is accomplished primarily by the use of an independent nose bridgeon which the ophthalmic mounting is adjusted. The bridge is a separateinverted U- shaped member adapted to rest on the nose and carries avertically adjustable slide. The ophthalmic mounting has no nose bridgebut includes a cross piece between the spaced lenses. The slide isformed with a clamp for receiving the cross piece, and the verticaladjustment of the slide places the desired portion of the lenses in theline of sight of the wearer. The slide is so constructed that itmaintains its adjusted position frictionally on the sides of the nosebridge. v Moreover, the slide, carrying the ophthalmic mounting isadjustable angularly with respect to the'sides of the bridge in order toalter the plane of the lenses if desired by the wearer.

The additional support provided by the temples of the mountingcooperates with the adjustable slide in maintaining the mounting intheselected adjusted position.

The invention is fully disclosed by way of example in the followingdescription and in the accompanying drawings in which:

Figure 1 is a perspective view showing the spectacles as worn;

Figure 2 is a side elevation of the bridge and adjustable memberthereon;

Figure 3 is a corresponding rear elevation;

Figure 4 is a front elevation of the assembly;

Figure 5 is a plan section on the line 5-5 of Figure 2;

Figure 6 is a vertical section on the line 66 of Figure 3, and

Figure 7 is a detail vertical section of the adjustable member at one ofthe sides of the bridge.

Reference to these views will now be made by use of like characterswhich are employed to designate corresponding parts throughout.

In Figure 4 is shown a pair of bifocal lenses joined to an ophthalmicmounting I having a pair of hinged branches 2 but no integral nose pieceor bridge. Each lens comprises a main lens section 8 or distancelens inwhich is fitteda smaller insert or reading lens 4.

The bridge 5 is a separate inverted U-shaped member having verticalsides 8 adapted to lie between the lenses. The lower ends of the sides 6carry pads I to rest on the nose of the wearer as shown in Figure l.

A supporting member 8 is slidably mounted on the sides 8 and, for thispurpose. is formed at its ends with apertured ears 8 receiving the sides6. The apertures ID in the ears 8 are enlarged at both top and bottom asshown in Figure 7, to permit the angular adjustment shown in dottedlines.

At the rear edge of the slide 8 is formed a downward flange H as shownin Figure 2. The flange has a forwardly facing horizontal groove 12adapted to receive the intermediate portion of the mount I.

At the forward edge of the slide 8 is provided a depending nut l3receiving a set screw ll having heads l5 at both ends or at both sidesof the nut.

In the use of the device, the support for the lenses on the head of thewearer is derived from the bridge 5 and the temples 2. The intermediateportion of the mount I is held in the groove 12 by the adjacent head l5of the set screw H.

The slide 8 is movable between spaced stops I6 formed on the sides 6.

The wearer adjusts the elevation of the lenses by placing his forefingerupon the bridge 5 and moving the slide 8 with his thumb, or in somesimilar fashion. In this manner he brings the reading lens in level withthe eyes. If an angular adjustment of. the bridge 8 is needed one end ofthe slide is pulled as permitted by the enlarged apertures l0 shown inFigure 7. To return the main lens to level of the eyes, fingers areinserted between'bridge 5 and slide 8. There is sufiicient frictionbetween the walls of the apertures and the sides 8 to maintain the slide8 in the adjusted position. The sliding movement .s limited by the stopsIS on the upper and lower parts of sides 8. I

Although a specific embodiment of the invention has been illustrated anddescribed, it will be understood that various alterations in the detailsof construction may be made without departing from the scope of theinvention as indicated by the appended claims.

What I claim as my invention is:

1. A support for spectacles comprising an inverted U-shaped nose bridge.a slide having apertured ends slidably receiving the sides of saidauonas bridge, and a clamp carried by said slide between the sides ofsaid bridge and adapted to be at- REFERENCES CITED tached to the crosspiece of an ophthalmic mounth f llowin references are of record in theing, each of the apertures of said ends being enfi e O this Patent!larged at both top and bottom to permit angular 5 UNITED STATES PATENTSadJustment of said sides in said apertures.

2. A support for spectacles comprising an in- Number Name Date vertedU-shaped nose bridge, a slide having 2 Goidstein Aug. 19, 1941 aperturedends shdabiy receiving the sides of said FOREIGN PATENTS bridge, aflange on said slide and having a groove 10 adapted to receive the crosspiece of an ophthal- Number Country Date mic mounting, another flange onsaid slide op- 359536 Germansf Sept- 1922 posite the first flange, and aset screw threaded 380725 Great Bmam Sept 1932 in the second flange andmovable toward the first flange. 15

JEAN HUGHES SEGUIN.

